Writing and adding machine.



M. E. LIW. WRITING FD ADDING HLUHINE. nrmou'lol Hum 11m10.419s.

Patented Nov. 16.1909.

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Patented NOV. 16, 1909.

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Patented Nov. 16, 1909.

12 SHEETS-SHEET 6.

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APPLICATION FILED MAB. 13,1904.

Patented NOV. 16, 1909.

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940,037, Patented Nov. 16, 1909. 13 SHEETS-SHEET \/\/|T NEEEEE: INVENTDE s f/MMWM mw M l HIE ATTUHNEY M. H. Looxwoon. WRITING AND ADDINGMACHINE.

APPLICATION FILED MAR. 1B, 1904A Patented Nov. 16. 1909.

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APPLIUATION FILD 1Luz.1,1ao4*I Patented Nov. 16. 1909.

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53 MATNEEEEE H15 TTDFINEY 1511. H. LOGKWOOD.

WRITING AND ADDING MACHINE.

APPLIUATION FILED MAn.1s,1e04

Patented Nov. 16, 1909.

12 SHEETS-SHEET 12.

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INVENTDR WIN 5555 mma UNITED STATES PATENT OFFICE.

MARQUIS HARTWELL LOCKWOOD, 0F NEW YORK, N. Y., ASSIGNOR T0 UNION TYPE-WRITER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WRITING AND ADDING MACHINE.

Specification of Letters Patent.

Patented Nov. 16, 1909.

Application led March 16,1904. Serial No. 198,333.

,lowing is a specification.

My invention relates principally to adding machines.

My invention relates also to combined writing and adding machines andhas for its object the provision of an improved machine of thischaracter.

My invention consists in certain parts, improvements and combinationswhich will be fully set forth herein and particularly pointed out in theclaims.

In the accompanying drawings, I have illustrated one embodiment.- of myinvention wherein an adding mechanism is connected to a Remington No. 6.typewriting machine in such manner as to automatically add numberswritten by said typewriting machine, the adding mechanism being in thenature of an attachment to the typewriting machine.

In said drawings, Figure 1 is a front elevation of the machine, thetypewriter keys being omitted. Fig. 2 is an end elevation of themachine. Fig. 3 is a detail view in cross section of a certain contactdevice used in my construction. Fig. 4 is a longitudinal section of thesaine. Fig. 5 is a plan view of the machine. Figs. G and 7 are views inelevation showing the connection between the adding mechanism and thetypewriter carriage, the parts being shown in diferent po sitions insaid views. In these figures the adding mechanism is shown in section onthe line a-a of Fig. 30. Fig. 8 is a. front elevation of the carriageconnections shown in Figs. 6 and 7. The contact device on the typewritercarriage shown in Figs. 6, 7 and 8, 1s a modification, the preferredforml being shown in Figs. 1 to 5 inclusive. Fig. 9 is a detail view invertical section on the line b-b of .F ig. 30. Fig. 10 illustrates adetail. Fig. 11 is a sectional view of the adding mechanism takensubstantially on line c-c of Fig. 30, and lookin to the left. Fi 12 is aview similar to ig. 11, some o the parts being omitted and others beingshown `in a different position. `in vertical section nearly on the linea-cz ot ,an `isometric view of the universal parts associated therewith.Fig. 23 1s a Fig. 13 is a view Fig. 30, and looking toward the right.Figs.

14, 15 and 16 are detail views of an escape ment mechanism, the partsbeing shown in diiierent positions in the dierent views. Figs. 17 and 18are views in vertical section substantially on a line d-d of Fig. 30,the escapement mechanism being shown in different positions in the twofigures. Figs. 19, 20 and 21 are detail views of parts of the escapementmechanism. Fi 22 is t4bar and fragmentary view in elevation showing oneform of key connection. Figs. 24 and 25 are similar views of a preferredform of ke' connections, the parts being shown in dififerent positionsin the two views. Fig. 26 is a rear elevation of the adding mechanism.Figs. 27, 28 and 29 are detail views showing iparts connected to thezero numeral key. Fig. 30 is a front elevation of the addin mechanism.Fig. 31 is an irregular vertica 'sectional view taken just inside theright hand end frame piece, and showing parts of the operatingmechanism. Fig. 32 is a similar view but with some of the parts shown inFig. 31 sectioned away. Fi s. 33, 34, 35, 36, 37 and 38 are detail viewso parts of the operating mechanism. Fig. 39 is a front elevation of theadding mechanism. Fig. 40 is a View similar to Fig. 31 but showing someparts not shown in said Fig. 31. Fig. 41 is a view similar to Fig. 31but showing the cams in operated position. Figs. 412, 43, 44 and @t5 areviews illustrating details of the operating mechanism. Fig. 46 is a viewin vertical section on the line e-c of Fig. 47 looking toward the left.Fig. 47 is a rear elevation. Figs. 4:8 and 49 are enlarged detail viewsof parts shown in Figs. 46 and 47. Fig. 5() a. view in vertical sectionon the line e-e of Fig. 47 and looking toward the right iii said figure.Fig. 51 is a view in vertical section on the line of Fig. 47 and lookingtoward the right in said figure. Fig. 52 is a view in vertical sectionon the line -g of Fig. 47 looking toward the left. Igig. 53 is a Viewsimilar to Fig. 52 but showing the parts in a different position. Fig.54 is a view in vertical section on substantially the same line as Fig.51 but looking in the opposite direction.

Fig. a5 is a sectional View substantially on the line fri-ii of Fig. 50.and looking toward the front of the machine. Figs. 5U, 5T, 53, 59, t1()and U1 are detail views of portions of the addingl mechanism.

ln most of the ligures of the drawing some parts are omitted and otherslare shown roken away.

I have shown my adding mechanism attached to an ordinary Remington No.(3 typewriting machine. The frame of this machine comprises a base 1 anda top plate 2 connected to said base byl posts 3. rl`he key levers 4 arefulcrumed near their rear ends beneath a flange 5 and are provided upontheir front ends with the character keys C. The key levers 4 areconnected by links 7 with pivoted type bars 3 and each of said type barshas upon its free end two types 9. When any key is depressed its typebar is thrown upward against the paper carried by a platen 1t) mountedin a platen frame 11 which is connected to a carriage truck 12. Saidtruck is provided with traverse rollers 13 running on a rail 111 whichis mounted on posts 15 rising from the top plate 2. The platen frame l1has at the front thereof a roller 16 which runs on a rail 17 supportedby posts 13. The

osts 18 are movably supported on the ramework of the machine and areconnected to devices for imparting a case shift motion to the platenframe. These devices are not. here shown but are well-known in the art.The platen frame 11 is pivoted to the rod 19 so that the frame may beraised to bring the Writing into View. The carriage is normally' drawnto the left by a band 20 running over a spring drum 21 in the usualmanner and the motion of the carriage under the impulse of said springdrum is controlled by an escapement mechanism comprising an escapementwheel 22 controlled by dogs mounted on a rocker frame 23 which ispivoted at 24; and is provided with forwardly extending arms 25 whichare connected by links 26 with a universal bar 27 running under the keysin the usual manner. The escapement wheel 22 is on one end of a shaftwhich carries at its other end a pinion 28 which meshes with a rack 29mounted on the carriage. The construction is such that as the characterkeys are depressed one after another a step-bylstep motion is impartedto the carriage.

In many cases Where numbers are to be Written on the t pewriting machineand automatically ad ed, the numbers to be added are written in columns.and .this Work is greatly facilitated by the use of a denominationaltabulator. Any tabulator mechanism ma be used for this purpose. The onewhich ihave here shownis Well-known in the art as the Gerin tabulator. Abar 30 (Fig. 5) is supported on the truck, 12 by means of two arms orbrackets 3l, extending backward from said truck. The bar 30 isrectangular in cross-section and its two ven tical faces are formed withseries of teeth, the pitch of which corresponds to the pitch of theletter space rack 2t). Stops are held in place on the bar 3() by theteeth of said bar, the notches between successive teeth corresponding tothe several letter space positions of the carriage. The stops may beplaced in any of the notches of the series. Said stops cooperate` withdenomination stops 33 movablyl supported in the framework 3stwhich issecured to the frame oi' the typewriting machine. The stop surfaces ofthe successive denomination stops 33 are a letter space distance apart,and each of said denomination stops is op eratively connected with pushrods 35 (Fig. 5) extending from front to back of the ma chine betweenthe key levers, by one of a series of levers 3G (Fig. 1) pivoted in theframe 311. Each of the rods 35 has on its front end a push key 37 (Figs.1 and 5). Each of the keys 3T corresponds to a denominational positionof the carriage as indicated by a. scale 33 arranged above said keys.The denomination stops 33 control a universal bar 39 (Fig. 5) which ispivot.- ally connected to the frame 34 and has connected thereto an arm40 which in turn is connected to a le'ver 41 which extends forward underthe feed rack 29. The construction is such that when any tabulator key37 is pushed in, the corresponding denomination stop 33 will beprojected into the path of the carriage stop 32 and will operate theuniversal bar 39 which, through the lever f1-1, raises the rack 29 outof engagement with its pinion 23, thus freeing the carriage, which isdrawn by the spring drum 21 until arrested in the denominationalposition corresponding to the tabulator keyI operated by the carriagestop 32 striking the denomina tion stop 33. A carriage scale 42 issupported at its ends by brackets 43 secured to the front portieri ofthe platen frame 11. Ali index (not shown) eoperates with this scale.The tabulator bar 30 has its notches numbered to correspond with thescale 42 as shown in Fig. 5.

The parts thus far described are old and well-known.

My adding mechanism is secured to the framework of the typewritingmachine between the two front posts 3. The frame of this mechanismincludes a bottom plate 50 which is formed onits underside with ashallow groove or longitudinal recess 51 which receives a frame bar 52which extends across the typewriting machine above the key levers 4 andconnects the two front posts 3 of said machine (see Figs. 1, 2 and l1).The frame piece 50 has secured to the left hand end thereof, as byscrews 53, a vertical frame piece 54. The rear edge of said frame piece54 rests against the front face of the left hand post 8 and said framepiece is clamped to said post by a clamping screw 55 threaded into aU-shaped clamping piece 56. One arm of the clamp piece 56 extends backof the post 8 and the other arm thereof extends in front of aperpendicular reduced portion 57 of the frame piece 54 (see Fig. 1).Another vertical frame ieee 58 is secured to the plate 50 at the righthand end thereof and the rear edge of said plate 58 rests against thefront face of the right hand post 3 to which it is secured by a clamp 59similar to that on the other side of the machine. The clamps 56 and 59are readily removable and when they are removed the framework of theadding mechanism is no longer fastened to the framework of thetypewriting machine. The clamp 59 engages a reduced portion 60 (sce Fig.18) of the frame plate 58, said reduced portion being similar to that ofthe plate 54 at the other end of the machine. Five partitions 61, 62,63, 64 and 65 rise from the base plate 50 and support most of the addingmechanism. These partitions are connected together at the top by a framelate 66 which is shown, for example, in Figs. 4G and 47, but which isomitted from many of the views of the drawings. There is a strip ofmetal 67 extending longitudinally of the machine in front thereof andanother strip 68 at the back. These strips are secured to the base plate50 and said base plate and the strips are slotted to receive thepartitions 61, 62, G8, 64 and 65. Itwill be observed by reference toFig. 2 that the outline of the adding mechanism' in cross-,section hasbeen made to conform to the space between the links 7 and the back rowof key levers 4.

I employ a setting-up and indicating mechanism which is mounted in acarriage 70. The left hand end of this carriage is shown in Figs. 17 and18 and the ri 'ht hand end in Fig. 50. The carriage is siown in frontelevation and in its initial or right hand position in Fig. 80, and inits extreme left hand position in Fig. 89. Said carriage is shown inrear elevation in its initial position in Fig. 26, in longitudinalsection in its extreme left hand position in Fig. 55, and in transversesection in Figs. 51 and 54. It will be observed that when in its initialpov sition said carriage lies for the greater part between thepartitions 63 and 64 and when in the extreme left hand position it liesfor the greater part between partitions 62 and 63. The partition 63 iscut away as shown, for example, in Figs. 50 and 55, to permit thepassage of the carriage from one position to another. As will be bestunderstood by reference to Fig. 55, the frame of the carria e comprisesa right hand end plate 71 an a left hand end plate 72 connected togetherby a sleeve 73 on which said end plates are held by nuts 74 threaded onto the ends of saidsleeve 73. r1`he end plates 71 and 72 are alsoconnected by a rod 75 and bars 76, 77 and 81 (Fig. 54). The carriage issupported by and 1s movable along two rock shafts 78 and 79 (Figs. 54and 55). These shafts Will be more particularly referred to hereinafter.The shaft 78 extends through the sleeve 78. A nose 8() of each of theend plates 71 and 72 rests on the shaft 79 and the bar 76 extendsbeneath said shaft so that the front portion of the carriage issupported and guided by said shaft. Nuts 82 are threaded on to the endsof the rods outside of the frame plates 71 and 72. The carriage is drawntoward the left by a cord, strap or chain 88 which runs over a pulley 84in the partition 62 and over a spring actuated pulley 85 (Fig. 30). Thispulley is driven b y a spring coiled within a drum 86, which is fixed toa sleeve 87 loosely mounted on a shaft or rod 88 (Figs. 11 and 18). Theshaft or rod 88 is supported at its ends by the partitions 61 and 62.Adjacent the paa'titions 61 the sleeve 87 has fixed thereto a ratchetwheel 8f) controlled by the retaining pawl D() which is piroted to thepartition 61 at 91 and is pressed into engagement with the ratchet 89 bya spring 92. By means of this pawl and ratchet mechanism andconnections, the tension of the spring in the drum 86 may be regulated.

The ten numeral keys of the typewritingl machine are connected to tenrock shafts 93, which are journaled in the frame strips or bars 67 and68 (Figs. 11 and 13). These rock shafts extend from front to back of themachine just above the bottom plate 50 and extend through the bar 68,outside of which each of the rock shafts has fixed thereon the hub 94 ofa crank arm 95 (Figs. 11, 13, 22 and 26). Each of the crank arms 95 isconnected by a link 96 with the key lever 4 of one of the numeral keys.In the machine here illustrated (see Fig. 5) the zero is printed by theO and the 1 by the L key, and these keys are included in the numeralkeys referred to. I prefer to connect the links 96 to the key levers byan adjustable connection which is shown in Fig. 2. A U-shaped band 97 isbent over the key lever, and a lever 98 is fulcrumed in the two arms ofsaid U-shaped plate by trunnionlike studs `99 projecting into openings100 in said plate. A strip 101 lies against the bottom edge of the keylever between the arms of the plate 97. On either side of said arms saidplateis formed with ears 102 which are bent upward to embrace the facesof the key lever. TWO set screws 108 are threaded through the lever 98on opposite sides of its fulcrum and their upper ends engage the plate101. The link 96 is pivotally connected to the lever 08 near one end ofsaid lever by having its lower end bent and extending through an openingin said level'. Said opening has the form ot' an open ended Islot`extending to the end o1' the lever 0S as shown. A screw 10-1, threadedthrough the lever, normally closes said slot and retains the link inplace, but the link may be removed by withdrawing the screw far enoughto clear 1 rock shaft. 93 connected thereto is rocked toward the lefthand of the operator.

Above the rock shafts 9?) and extending across the stime there ismounted a series of ten reciprocatory slides 105. The forni of theseslides except those connected to the O and 9 keys, is best shown in Fig.2Q. As will be seen by reference to Fig. 30, each of the slides 105 hasone of its ends just inside of the partition G5 and the other beA tweenthe partitions (31 and 02. The slides arc guided by slots 106 inpartitions G2, 03 and (A through which said slides extend. These slidesare shown in transverse section in Figs. 11, 13 and 50. As will be seenby reference to Figs. 24 and 25, which are views of a slide, as seenfrom the back of the mav chine, each slide 105 has pivoted to one sidethereof at 106 a dog 10T, the free end of which rests against a pin 10Sprojecting from the face of the slide 105. The dog 10T is formed with anotch 100 into which eX- tends a crank arm 110 fixed to one of the rockshafts 93. The parts stand normally in position shown in full lines inFig. 24; but when the shaft 93 is rocked by the depression of its keylever, the parts move first to the position shown by dotted lines inFig. 24, after which the arm 110 escapes from the notch 109 and theslide 105 is thrown back to normal position by a spring which Will bepresently described, the dog being eammed up to the position shown inFig. 25 by the end of the crank arm 110. It Will thus be seen that whena numeral key is depressed to Write a number, one of the slides 105 ismoved a short distance to the left during' a portion of the down strokeof the key; but that at a predetermined point in the'down stroke of thekw the sirdre is entirely freed from the key and returns to normalposition. When the key lever is released and returns to its normalposition the shaft 93 rocks back to the position shown in full lines inFig. 24 and the dog 107 returns to its initial position impelled bygravity or by a spring 111 coiled in an annular recess in the face ofthe dopl 107 and having one end bent into an opening 112` in said dogland the other end into an opening in the slide as shown at 113.

ln rase it is not desired to allow the slide 105 to snap back tonorn'ial position without waiting t'or the key to return to normal posivtion, the form of connection shown in Fig. 23 may be employed. Accordingto this moditication the arm 110 extends into a` notch 111 formed in a`plate 115 secured to the side of the slide 105 as by rivets 116. 'lhenotch 114 has sides so formed that when tho key lever is depressed,during the tirst portion oi' the down stroke of the key, the slide ismoved to the left after which the arm 110 escapes from the notch 114 andmoves along a circular arc-shaped edge 117 of the plate 11o, and thusholds the slide 105 in operated position as shown in dotted lines inFig'. Q3 until the key lever returns to normal position. It Will beobserved that according to this form of connection the entire motion oithe slide 105 is imparted thereto during the first portion of the downstroke of the key and that during the remainder of such down stroke andduring the first portion of the up stroke of the key, said slide is heldin operated position.

The particular arrangement of the key operated rock shafts and theslides operated thereby which has been described has import-.intadvantages in a mechanism of this character, and so far as I am awarethis arrangement is new. AS the rock shafts 93 extend in a. directionfrom front to back of the machine, and as the slides 105 lietransversely across them, it will be seen that any of said rock shaftsmay be connected to any of said slides, and said rock shafts may bespaced across the machine in any desired manner, thus accommodating theadding attachment to any peculiarit f or irrefrularity in thearrangement of the keys of tlie type- \\'riting machine. 1t will beobserved that such an irregularity actually exists in the machine shownin this case, the numeral keys not being spaced uniform distancesapart.' and not being arranged in serial order. Furthermore, by thedescribed arrangement, the spacing apart of the slides 105, is altoether independent of the arrangement o the keys; and as said slidesextend transversely of the ty ewriting machine or longitudinally of t eaddin at tachment, the arrangement admits o 0geratively connecting saidslides to the ad ing mechanism in any one of a. variety of Ways, andpaint or length of the slides. It will thus be per ceived that thecombination and arrangement of these parts have advantages which are notconfined to the articular adding mechanism here shown an described.

ists steeg the 94ans? In the present machine each of the slides 105coperates with a universal bar Which controls an escapement for thecarriage and also controls a device for releasing certain ,setting-updevices ,mounted in said carriage. The universal bar and the partsimmediately connected therewith occupy a portion of the space betweenthe `partitions 61 and 62. This mechanism is shown in front elevation inFig. 30, in isometricl projection in Fig. 22 and in section and endelevation in Figs. 6, 7, 11, 12 and 13. As shown most clearly in Figs.13, 22 and 30, the universal bar 118 extends across the series of slides105, each of which has projecting from its upper side a lug 119 engagingthe right hand face of said bar. liv'hile the part 118 is not here shownin the form of a bar, yet it has the relations and performs thefunctions of the part which in key operated machines generally is calleda universal bar, and hence I use this term in referring to said part. Abracket 120 (Fig. 30), here shown as a cylindrical piece, is secured toand projects from the partition 62; and the bar 118 is formed with twoupwardly extending arms 121 through which passes a rod 122, which rodpasses through and is journaled in the cylinder-shaped bracket 129. Therod 122 thus forms a support and fulcrum for the universal bar. As mostclearly shown in Fig. 22, one of the arms 121 has extending to the leftthere from an arm or segment 123, the free edge of which is formed witha series of teeth. 124 constituting a segment of a crown gear. As bestshown in Figs. 13 and 30, a plate 125 is secured to the end of thebracket 120 by screws 126, and a spring 127 is connected at one end tosaid plate and at the other to the arm 123. It is the downward tensionof this spring on the arm 123 which normally holds the universal bar inits right hand position, and which returns the slides 105 to normalposition when the arm 110 es capes from the notch 109 in the dog 107.Then the machine is in operation the gear teeth 124 mesh. with the teethof a segmental rack 128. The segmental rack 128 is on one arm of what isin effect a bell crank lever 129 which is fulcrumed on a shouldered andheadedscrew 130 which is threaded into an arm or lever 131. The lever131 is fulcrumed on a shouldered and headed screw 132 which is threadedinto the partition 61. The screw 132 is shown in dotted lines in Figs.11 and 12, and is better shown in Figs. 6 and 7 As is best shown inFigs. 6 and 7, the rack 128 may be moved into and out of engagement withthe teeth 124 by oscillating the lever 131 on its ivot. Said lever isnormally held in position to disengage the rack teeth by a spring 133connected at one end to the partition 61 and at the other end to a pin134 pro'ecting :from the face of the .lever 131 below tlie pivotthereof. One arm of lthe bell crank lever 129 extends downwardly fromthe pivot 130 of said levier and has :a shouldered and headed screw 135threaded into it. This screw is shown in section in Fi 6, 7 and 13. Itwill be observed that sai screw is about the same distance from thefulcrum 130 of the lever 129 as said fulcrum is from the fulcrum 132 ofthe lever 131 and that said screw 135 stands nearly in line with Vthefulcrum screw 132. The arrangement is such that as the lever 131 isrocked to bring the racks 124 and 128 into or out of engagement, thescrew 135 has only a very slight movement imparted thereto, andpractically no movement at all in a front and back direction. The screw135 extends loosely through a slot 136 in an irregular shaped link orconnecting bar 137. At its rear end said link is pivoted at 138 to anarm 139 extending from a hub 14() (see Fig. 27) which is loose on ashaft 141. These parts will be more fully described hereinafter. Thefront end of the link 137 is pivoted at 142 to an arm 143 which is fixedon a rock shaft 144 on which is fixed the esca ement mechanism whichcontrols the step` y-step motion of the earriage 70. lt will be observedthat the construction is such that if a numeral key be depressed whenthe racks 124 and 128 are in mesh, the universal bar will be rocked,which will rock the hell crank lever 129 which, through its pin 135,will reciprocate the link 137, which will impart an oscillation to thehub 140 and to the rock shaft 144; but if the universal bar be rockedwhen said racks are out of mesh, the remainder of the adding mechanismwill not be aeoted thereby. A second plate 145 is fixed to the end ofthe bracket 120 beneath the plate 125, as shown in Figs. 13 and 30. Thelower end of this plate 145 has secured thereto one end of a spring 146,the other end of which is secured to a pin 147 projectin from the arm139. This spring tends to pu the link 137 toward the front of themachine, which is the normal position of said link. The motion of theparts under the impulse of the spring 146 when the ranks 124 and 128 areout of mesh, is limited by a pin 147 projecting from the lever 131 intothe path of the lower arm of the bell crank 129. The arts are soconstructed as to afford an adjustment between the lower arm of the bellcrank 129 and the rack 128. To this end the rack teeth are formed on asegment 148 which is pivoted on the screw 130. A headed screw 149extends through a slet 150 in the bell crank 129 and is threaded intothe plate 148. By loosening the screw 149, the bell crank 129 and theplate 148 may be left free to be adjusted the one with reference to theother and these parts are secured in adjusted relation by tightening thescrew. When the screw 149 is thus tightened the parts are rig idlyconnected together' and operate as a single piece.

lt will be perceived from what has been said above that the universalbar 118 is disconnected from the mechanism which it is designed tocontrol whenever the lever 131 is in its forward position; and that saidle ver is normally held in its forward position by the spring 133. Themeans for moving Said lever back to bring the racks 124 and 128 intoengagement may be understood by reference to Figs. 6 to 12 inclusive andFig. 22. At thc point where the shaft 7.) passes through the partition61, said shaft is loosely surrounded by a sleeve which is jourualed inan opening in said partition 61 and which has on the outer or left handend thereof a milled head 151 by which said sleeve may be turned toeither of two positions. Said sleeve terminates just inside of thepartition 61 where it has Fixed thereto a. cam arm 152. Then the partsstand in such position that the arm 152 hangs downward as shown in Figs.6 and 7, said parts have no effect on the lever 131; but when bymanipulation of the milled head 151 the arm 152 is turned into theposition shown in Figs. 11 and 22, said arm 152 engages the edge of thelever 131 and presses said lever to its rear or operative position. 1twill be seen that the parts can be connected up in this manner at anytime at the will of the operator and that they will remain connected upas long as the arm 152 is left in its upper position.

In addition to the device just described, 1 have also provided meanswhereby the parts may be automatically connected up during apredetermined portion of the travel of the carriage of the typewritingmachine. Referring for example to Figs. 6, 7 and 8, a bracket 153 isclamped to the front of the top plate 2 of the typewriting machine bymeans of a thumb screw 154. Said bracket is formed with two upwardlyprojecting arms 155 in which is journaled a short shaft 156 liavingfixed to its back or inner end a crank arm 157. A headed and shoulderedscrew 158 is threaded through the outer end of the arm 157, and a locknut 159 is threaded onto the end thereof. Upon this screw is journaledan anti-friction roller 166. Referring to Fig. 2 it will be seen that asquare rod or bar 161 is supported by brackets 162, to which it issecured by screws 163, and said bracket is supported from the bracket 13of the carriage scale by screws 164. Referring back to Figs. 6, 7 and 8,I have there shown a cam or contact block 165 having in the front facethereof a groove of reetanvular eres-s section adapted to sembrare therod 161. As shown in Fig. 8 said groove is wider in an up and downdirection than the rod 161 and above said rod and within said groovethere is a strip 166 held in position by screws 167 which extend throughopenings in the block 165 and are threaded into the strip 166. Thescrews 167 are loose in their openings but are prevented from beingdisplaced therefrom by their heads which are eountersunk into said block165. A clamping screw Yl 68 ha ving a milled head isthreaded through theupper part of the block 16T and at its lower end engages the .strip 166.The block 165 may be placed upon the rod 161 and adjusted to anyposition along said rod by reference to the .scale l12 and clampedsecurely in position by tightening the scrcu 163. The block 165 isbeveled at its ends as shown at 166. The arm 157 is norn'ially held upin the position shown in Fig. 6 by a spring v17() which is coiled about`the shaft 156 and is secured at one end to said shaft and at the otherto one of the posts 155. 1t will be readily understood that as the contact block 165 moves back and forth with the carriage it depresses theroller 16() and arm 157 and holds them in depressed posi tion during anumber of letter space posiA tions of the carriage, which number depends upon the length of the contact piece. When in the travel of thecarriage the contact piece reaches the roller 160 one of the camsurfaces 169 depresses said roller and it. is held in depressed positionuntil the con-- tact block has entirely passed it when it is restored tonormal position by the spring 170.

r1`he shaft 156 has fixed to its front end an arm 171 which extends fromsaid shaft in a direction substantially horizontal and in the oppositedirection from the arm 157 so that arms 157 and 171 together constitutein effect a lever of the first order. At its free end the lever 171 haspivoted thereto a link 1.72 which at its lower end is pivoted to an arm173 which in turn is pivotally supported by a headed and shoulderedscrew 17 4. The arm 173 is shown in detail in Fig. 10 where it will beseen that a screw 175 is threaded through the free end of said arm andhas threaded on the right hand end thereof a headed sleeve nut 1.76, thesleeve portion of which forms a bearing for the end of the link 172. Theother end of the screw 175 is shouldered as shown and has journaled onits shouldered portion an anti-friction roller 177 which when the partsoccupy the posi tion shown in Fig. 6 rests in a cut-out portion 178 ofthe front face or edge of the lever 131. Said lever 131 extends upwardfrom said cut-out portion and the front edge thereof above such cut-outportion is formed substantially in the are of a circle having the ivot174 as its center. When the roller 177 1s resting in the cut-out portion178 said roller does not hold the lever 131 in its rear position; but ifthe anti-friction roller 1-60 be depressed by the Contact block 165,thus elevating the link 172 and the arm 173, the

roller 177 moves to the position shown in Fig. 7 and cams the arm 131 toits rearward position. throwing the segmental racks 124 and 128 intomesh. It will be seen that by the means which have been described thecarriage may automatically bring the universal bar 118 into operativeconnection with the mechanism which it is designed to operate, and maymaintain such connection during a predetermined number of letter spacemovements of the carriage.

I have provided means whereby the above described carriage connectionsmay be thrown into or out of operation as may be desired. To this endthe pivot screw 174 of the arm 173 is not threaded into a fixed portionof the machine but is threaded into a dislt 179 which isfixed to orformed on the end of a short shaft 180 (see Fig. 8), which passesthrough an opening in the partition 61 and has a milled head 181 securedthereto by a set screw 182 threaded through the hub ot' said milled head181 and engaging said shaft 180. The turning of the shaft 180 in eitherdirection is limited by a pin 183 projecting from the inner face of thepartition 61 into a segmental notch 184v in the disk 179. The pivotscrew 17aL is threaded into the disk 179 eccentrically so that when thedisk 179 stands in the position shown in Figs. 6 and 7 the roller 177 isin position to operate the lever 131 as shown and described; but whenthe disk 179 is in the position shown in Figs. 11 and 12 the roller 177is withdrawn from engagement with the lever 131 and is inoperative tomove said lever to its rear position even though the rcller 160 bedepressed by the contact block 1 The means for yieldingly holding eachof the milled heads 151 and 181 in either of its positions is best shownin Fig. 9. These milled heads are close together and each of them hasits hub flattened in two places as shown at 185. A spring 186 is bentinto the form shown in Fig. 9 with one portion thereof encircling a pinor headed screw 187 secured to the partition 6l. The two arms of thespring 186 extend between the two hubs and press against the flattenedsurfaces thereof to hold each of them in the position to which it hasbeen moved. The spring 186 is shown in dotted lines in Fig. 11.

It will be perceived that two means have been provided for bringing theadding mechanism linto operation, one a hand operated means by whichsaid mechanism can be brought into operation at any time, and the othera carriage controlled means by which the adding mechanism may be broughtinto operation automatically at any predetermined portion of the line ofwriting; and that said automatic means may be thrown out of operation atwill. In Fig. 12 the parts are shown in the position they occupy whenthe adding mechanism is entirely out of operation; in Figs. 11 and 22,in the position they occupy when the adding mechanism has been throwninto operation by the hand operated means; in Fig. 6 in the positionthey occupy when the adding mechanism is out of operation but is readyto be automatically brought into operation when the carriage shall havereached the proper position; and in Figs. 7 and 8, in the position theyoccupy when the adding mechanism has been brought into operation by thecarriage.

It will be observed that the contact block 165 may be readily removedfrom the machine. l contemplate providing a number of such blocks ofdifferent lengths.y the longest contact block being long enough tomaintain the adding mechanism in operation through a number of letterspace positions corresponding to the full capacity of the machine. theshorter ones being designed for use when it is desired to write numbersand automatically add the same in a number of denominations less thanthe full capacity of the inachine. By this means Where the numbers to beadded are small` other numbers which it is not desired shall be added onthe adding machine may be written closer to the adding column withoutaffecting the adding mechanisni than would be possible if the addingmechanism were maintained in operation through a greater number ofletter space positions.

Instead of varying the width of the adding column by the means justdescribed. l prefer to employ for this purpose a single contact piecewhich is adapted to automatically bring the adding mechanism intooperation in the same manner as the contact piece 165, but which isitself adapted to be adjusted so as to vary the number of letter spacepositions in or during which the adding mechanism is maintained inoperation to any number up to the full capacity of the machine.Y Theform of contact block which I employ is shown in Figs. 1 to 5 inclusive.vAs most clearly shown in Figs. 8 and 4, this contact piece comprises asleeve 188 having a squared longitudinal opening whereby said sleeve isslidably mounted on the square rod 161. The sleeve 188 is enlarged atone end and has threaded therethrough a set screw 189 the end of whichengages the rod 161 so that the sleeve may be moved to any desiredposition longitudinally of the rod 161 and secured in such position. Thesleeve 188 is rounded throughout the greater part of its length toreceive a series of rings 196 which are split as shown in Fig. 3 at 191and each of which is sprung onto the sleeve 188 so as to engage the samewith a snflicient degree of friction to hold the ring in either of twopositions to which it is designed to be adjusted. Each of the rings 190has projecting from one side thereof a lug 191. A

pill 192 projects outwardly f'l'onl each olE the rings to serve as ahandle, and the inner end of said pill projects into a scgnlentallongitudinal groove. or slot 1113 forlned in the surface o1l thc roundedportion ol' the sleeve 18H. 'l`he lnotioll of the inner end ot the pillttl is linlited by tht.I edges of the slot 192i. lVhcn any ring isturned to the position shown ill dotted lines ill Fi vf. l, its` lng 19tprojects downward illto position to engage thc roller ltit); but whenany ring is turned to the position shown in full lines in Fig. tl thelug 191 thereof is out otv the path of said roller 1G() and isinoperative lto depress the saine. The rings 19t) are held againstendwisc lllovenlent on the sleeve 19S ill one direction by the enlargedend of said s sleeve, and ill the otller direction by a lint 194`threaded on to the reduced elld of the sleeve. Each of the rings 190 hasa thiclo liess or breadth equal to one unit of feed of the carriage sothat when one of the rings is turned to the position showll by dottedlilies in Fig. 3 the carriage will bring the adding mechanism intooperation through only one letter space position of the carriage. lf tworillgs are tnrlled to this position the adding mechanism is operativethrougll two letter space positions of the carriage, alid so on. Each ofthe lugs 191 is rounded on its end in order to coperate with the roller160. In the drawings I have shown tllirtceli rings of which eight aieshown ill operative and five in inoperative position. The addingmechanism here shown is adapted to add numbers of only tendenominations, but if such numbers be pointed off with decimal pointsand commas, the adding column will have a` width of thirteen letterspaces (e. g., annemasse.)

So far as I am aware it is broadly new to provide a combined writing andadding niachine having means for printing numeral and other charactersand meansv for automatically bringing the adding mechanism intooperation through a predetermined por tion of the lille of writing, withany means whatever whereby the machine can be set S0 as to automaticallybring the adding mechanism into operation through different numbers ofdenominational positions, thus regulating the width of the laddingcolumn.

The escapement mechanism for the carriage T0 comprises a feed rack 195(Figs. 30 and 39. for example) the teeth of which are formed on adownwardly projecting portion of the late 76 which has been describedabove. Said rack teeth are engaged by feed dogs mounted on a rocker rame196 secured upon the rock shaft 144. As best shown in Fig. 30 said rockshaft 144 is iollrnaled in an opening n the partition 61 and passesthrough the partition G2 and into a, sleeve-like portion of the rockerframe 196. As best shown in Fig. 21 the shaft 144 terminates ill saidrocker traine at 19T and is rigidly secured to said rocker traine bypins 19S passing through `said l'ran'le and shaft. The rocher l'l'anle190 has projecting troni the right hand end thereof a` hull 199 whichextendsl through the partition titl (sec Fig. i227). this` hub andopening constitute in ctletlt a journal bearing lor the right hand elldoll the shat't .1l-t alld prevent clidwisc motion ot' said .shaft in onedirection. hind-- wise nlotion ot' said shat't ill thc other directionis prevented by a` collar 201 fixed on said shaft adjacent the partition(32. The details o1' tllo escapelnent mechanism are best shown in Figs.14 to 22 inclusive. The rocher traine lflt is it'ol'nlcd oli the upperside thcreot with a tlat surface 202 on which the loose dog 203 ispivoted by lnealls of a shouldered alld headed screw 204 passing.through said dog and threaded into said traine. Said loose dog normallypressed toward thc` front of the nlachine by a spring 205 which iscoiled about the screw 204 and is connected at one end to the dog andat. the other end to the rocker frame. The llpper right hand portion ofthe rocker traine 19o is formed to constitute a` tixed dog 20G having awide base against which the loose dog 203 is normally pressed by thespring 205; the fixed dog being eut bacia: so as to leave a narrow slotbetween the two dogs. ln Figs. 14, 15, 16 and 19 one of the teeth of therack 195 is shown in horizontal section and by reference to these tguresit. will be seen that each of said teeth has a. flat front face 20Tsubstantially parallel to the direction of motion of the carriage, aleft hand face 20S substantially at right angles to the face 207, saidface being adapted. to engage the escapelnent dogs, and a contact face209 which is beveled so as to make the right hand edge of the tooththinner than the left hand edge. The end ot' the loose dog projectsslightly beyond the end of the fixed dog` as shown and is formed with anupwardly extending lug 210 which has a face 211 (Fig. 22) the plane ofwhich is substantially perpendicular to the direction of movement of thecarriage, and a. front beveled face 212. The upwardly extending txed dog206 also has an engaging face 213 in a plane parallel to that of theface 211 of the loose dog 203, and said fixed dog is beveled away asshown at 214. In Fig. 14 the arts are shown in their normal positionswith a tooth 195 in engagement l with the loose dog. thon a numeralkeyis depressed, the rocker frame 196 rocks slightly toward the back of themachine` moving the loose dog out of the path of the tooth 195 andbringing the xed dog into the path of said tooth as shown in Fig. 15.When the rocker frame rocks back to its normal position the fixed dogmoves out of the path ofthe tooth 195 of the feed rack, but

